# -*- CPERL -*-
package LaTeXML::Package::Pool;
use strict;
use LaTeXML::Package;
RequirePackage('omdoc');
DefKeyVal('pf','id','Semiverbatim');
DefKeyVal('pf','display','Semiverbatim'); # not used at the moment
DefKeyVal('pf','for','Semiverbatim');
DefKeyVal('pf','from','Semiverbatim');
DefKeyVal('pf','proofend','Semiverbatim');
DefKeyVal('pf','noproofend','Semiverbatim');
DefKeyVal('pf','type','Semiverbatim');
DefKeyVal('pf','title','Semiverbatim');
DefKeyVal('pf','continues','Semiverbatim');
DefConstructor('\sproofend',"");
DefEnvironment('{sproof} OptionalKeyVals:pf{}',
       "<omdoc:proof ?&KeyVal(#1,'id')(xml:id='&KeyVal(#1,'id')')()>\n"
       . "?#2(<omdoc:omtext><omdoc:CMP><omdoc:p>#2</omdoc:p></omdoc:CMP></omdoc:omtext>\n)()"
               . "#body"
             . "</omdoc:proof>\n");
DefEnvironment('{sproofidea} OptionalKeyVals:pf {}',
       "<omdoc:proof ?&KeyVal(#1,'id')(xml:id='&KeyVal(#1,'id')')()>\n"
       . "<omdoc:omtext><omdoc:CMP><omdoc:p>#2</omdoc:p></omdoc:CMP></omdoc:omtext>\n"
     . "</omdoc:proof>\n");
DefCMPEnvironment('{spfstep} OptionalKeyVals:pf',
             "<omdoc:derive ?&KeyVal(#1,'id')(xml:id='&KeyVal(#1,'id')')()>"
          . "<omdoc:CMP><omdoc:p>#body</omdoc:p></omdoc:CMP>"
        . "</omdoc:derive>\n");
DefCMPEnvironment('{sproofcomment} OptionalKeyVals:pf',
       "<omdoc:omtext ?&KeyVal(#1,'id')(xml:id='&KeyVal(#1,'id')')()>"
       . "<omdoc:CMP><omdoc:p>#body</omdoc:p></omdoc:CMP>"
     . "</omdoc:omtext>");
DefEnvironment('{spfcases} OptionalKeyVals:pf {}',
       "<omdoc:derive ?&KeyVal(#1,'id')(xml:id='&KeyVal(#1,'id')')()>\n"
       . "<omdoc:CMP><omdoc:p>#2</omdoc:p></omdoc:CMP>\n"
         . "<omdoc:method xref='#proof-by-cases'>"
           . "#body"
         . "</omdoc:method>"
     . "</omdoc:derive>\n");
DefEnvironment('{spfcase} OptionalKeyVals:pf{}',
       "<omdoc:proof ?&KeyVal(#1,'id')(xml:id='&KeyVal(#1,'id')')()>\n"
       . "?#2(<omdoc:omtext><omdoc:CMP><omdoc:p>#2</omdoc:p></omdoc:CMP></omdoc:omtext>\n)()"
       . "#body"
     . "</omdoc:proof>\n");
DefEnvironment('{subproof}',
       "<omdoc:proof>\n #body\n</omdoc:proof>\n");
DefKeyVal('just','id','Semiverbatim');
DefKeyVal('just','method','Semiverbatim');
DefKeyVal('just','premises','Semiverbatim');
DefKeyVal('just','args','Semiverbatim');
sub extractBodyText {
  my ($box, $remove) = @_;
  my $str = '';
  my @boxes = $box->unlist;
  foreach my $b(@boxes) {
    my $s = '';
    if ($b =~ /LaTeXML::Whatsit/) {
      my $body = $b->getBody;
      $s = $body ? extractBodyText($body, $remove) : '';
    } elsif ($b =~ /LaTeXML::Box/) {
      $s = $b->toString || '';
      @{$b}[0] = '' if $remove; }
    $str .= $s; }
  $str =~ s/\s+/ /g;
  $str; }

DefEnvironment('{justification} OptionalKeyVals:just', sub {
 my ($doc, $keys, %props) = @_;
 my $text = extractBodyText($props{body}, 1);
 my $node = LookupValue('_LastSeenCMP');
 $node->appendText($text) if $node;
 my $method = $keys ? $keys->getValue('method') : undef;
 $doc->openElement("omdoc:method", $method ? (xref => $method) : ());
 $doc->absorb($props{body}) if $props{body};
 $doc->closeElement("omdoc:method");
 return; });
DefMacro('\premise[]{}', sub {
   my ($xref, $text) = ($_[1], $_[2]);
   my @res = (T_CS('\premise@content'));
   push(@res, T_OTHER('['), $xref->unlist, T_OTHER(']')) if $xref;
   push(@res, T_SPACE, $text->unlist) if $text;
   @res; });
DefConstructor('\premise@content[]', "<omdoc:premise xref='#1'/>");
DefMacro('\justarg[]{}', sub { (($_[1] ? $_[1]->unlist : ()),
T_SPACE, $_[2]->unlist, T_SPACE); });

Tag('omdoc:derive', afterClose=>sub {
      my ($doc, $node) = @_;
      my @children = grep($_->nodeType == XML_ELEMENT_NODE, $node->childNodes);
      my $firstCMP = undef;
      foreach my $child(@children) {
        next unless ($child->localname || '') eq 'CMP';
        if ($child->hasChildNodes()) {
          next unless $#{$child->childNodes} == 0;
          next unless $child->firstChild->nodeType == XML_TEXT_NODE; }

        if ($firstCMP) {
          $firstCMP->appendText($child->textContent);
          $node->removeChild($child);
        } else { $firstCMP = $child; }
      }
    });

Tag('omdoc:proof',afterOpen=>\&numberIt);
Tag('omdoc:derive',afterOpen=>\&numberIt);
Tag('omdoc:method',afterOpen=>\&numberIt);
1;
